moving legs

OK I got all 26 pavers flush and level with the ground and under each leg , made sure they were all straight, pool is now filled and every so often one moves. Please tell me is this normal and has anyone else experienced the slight bend inward of where the T connects to the legs. Nerves are shot and frazzled !!!!!!!
 
Yea, it looks like the pool pudged out and the legs are stretching to hug them tight. I wouldn't worry about it, if the legs aren't where they need to be they will definitely move on their own but as long as they are all touching and sturdy it will be fine.
 
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